34 lines
1.3 KiB
LLVM
34 lines
1.3 KiB
LLVM
|
; RUN: llc -mtriple=thumbv7-apple-ios -disable-code-place < %s | FileCheck %s
|
||
|
|
; RUN: llc -mtriple=armv7-apple-ios -disable-code-place < %s | FileCheck %s
|
||
|
|
|
||
|
|
; LSR should compare against the post-incremented induction variable.
|
||
|
|
; In this case, the immediate value is -2 which requires a cmn instruction.
|
||
|
|
;
|
||
|
|
; CHECK: f:
|
||
|
|
; CHECK: %for.body
|
||
|
|
; CHECK: sub{{.*}}[[IV:r[0-9]+]], #2
|
||
|
|
; CHECK: cmn{{.*}}[[IV]], #2
|
||
|
|
; CHECK: bne
|
||
|
|
define i32 @f(i32* nocapture %a, i32 %i) nounwind readonly ssp {
|
||
|
|
entry:
|
||
|
|
%cmp3 = icmp eq i32 %i, -2
|
||
|
|
br i1 %cmp3, label %for.end, label %for.body
|
||
|
|
|
||
|
|
for.body: ; preds = %entry, %for.body
|
||
|
|
%bi.06 = phi i32 [ %i.addr.0.bi.0, %for.body ], [ 0, %entry ]
|
||
|
|
%i.addr.05 = phi i32 [ %sub, %for.body ], [ %i, %entry ]
|
||
|
|
%b.04 = phi i32 [ %.b.0, %for.body ], [ 0, %entry ]
|
||
|
|
%arrayidx = getelementptr inbounds i32* %a, i32 %i.addr.05
|
||
|
|
%0 = load i32* %arrayidx, align 4
|
||
|
|
%cmp1 = icmp sgt i32 %0, %b.04
|
||
|
|
%.b.0 = select i1 %cmp1, i32 %0, i32 %b.04
|
||
|
|
%i.addr.0.bi.0 = select i1 %cmp1, i32 %i.addr.05, i32 %bi.06
|
||
|
|
%sub = add nsw i32 %i.addr.05, -2
|
||
|
|
%cmp = icmp eq i32 %i.addr.05, 0
|
||
|
|
br i1 %cmp, label %for.end, label %for.body
|
||
|
|
|
||
|
|
for.end: ; preds = %for.body, %entry
|
||
|
|
%bi.0.lcssa = phi i32 [ 0, %entry ], [ %i.addr.0.bi.0, %for.body ]
|
||
|
|
ret i32 %bi.0.lcssa
|
||
|
|
}
|